Automatic safety-spring and ball-valve cock



APPLICATION FILED MAR. 20- l9l9.

Patented Oct. 7, 1919.

STATES PATENT Enron.

PRATT c. MoRRIs, or TnoMAsvILL -eEoReIA, AssIcNoR on'onn-rrnnn'ro CHARLES w. COOPER, or THOMASVILLE; EG-EOBGIA.

AUToMA'ric SAFETY-SPRING nun BALL-VAL E COCK To all whom it may concern:

Be it'knownthat I, PRATT C. MoRRIs, a

citizenof the United States, residing at" Thoniasville, in the county of Thomas and State of Georgia, have invented certain new and useful Improvements in Automatic Safety-Springs and-Ball-Valve Cocks; and I do declare the following to be a1full, clear, andexact description of theinven tion, such as will enable others lgskilled in the art to whichit appertains toinake anduse the same reference being had to the accompanying drawings, and to the letters and figures ofreference marked thereon, which forma part of thisspeclfication.

Myinvention relates to pet or drain-cocksor valves, and more particularly to drain cocks or valves for draining or emptying cylinders or chambers containing liquids or fluids and from which the fluid or liquid is drained-or discharged at intervals; or

periodsas desired or'found necessary, for instance, in auto crank-cases, gas tanks, radiators, or oil, water or other fluid holding vessels; It has for its objects to provide such a pet or drain cook or valve in wh1ch the valve-closure element when re' leased from closure holding pressure will unseat itself without sticking to its seat so as to permit the dischargeof the containedfluid, liquid or gas, and willinstantly close when the discharge from' the cylinderor andsuch other objects as may hereinafter appear the invention consists'in the fea tures hereinafter particularly described and then sought to be clearly defined by the claims, reference being had to the accompanying drawing forming a part hereof,

and in which I Figure 1 15 a side v1ew of the cock or valve and showing the application of awrench that may be used for opening it when located in a 'quite inaccessible place;

Fig. 2, is a horizontal longitudinal section through the cook or valve;

Fig. 3 is an end view of the valve open ing stem andside arms; and Fig. 4 is a plan view of the operating wrench.

Specificationof Letters Patent.

Patented Oct; '7, 1919.

App1ication filed March 20, 19191 SrialNd. 283,800.

In the several figures of the drawing the parts are illustrated on an enlarged scale.

Iir'the drawing the numeral 1 designates the valve-case which may be of any approved form in outline, and has a threadedend or nippleQby which itis attached to the cylinder or vessel' on; which to be used. It has an interior cavity 3- to receive a ball, or closure member 4 which seats against 1 a conical shaped seat 5. 1 Between the ball and the inlet passage-6 isa chamber? in which is a spring 8. Witlriir the valve case is a chamber 9 in which=fits a spring- 10 and which normally holds-theball to its seat so as to close the valve-'orcockt Between the spring 10 and the ball 4 is a follower 11 Wl1 10l1 has outwardly extending arms-12 which passthrough slots 13 formed in the sides of the casing. To"

the follower ll is connected'a rod 14 which extends through-the heador cap 15 0f the casing I and is formed with a suitable grip 1 or handle 16 byywhich apull maybe exerted o1r=the follower to overcome the tension of spring 10 and relieve 1ts' pressure against the ball' 4 so that=the latter may be moved from itsseat; The rod 14 may be connected to thefo llower ll by a shoulder or head 17 formed at its end and fittingin a socket l8 formed in the -follower, or otherwise connected to the follower. The cap or head15 of the valve casing is preferably made removable for the insertion; and removal of the elements contained i within the casing, and

maybe "attached to the body of] the casing screwsi19aor1 otherwise. The tension of" spring? 10 isc greater than? that of i spring 8 so as to normally hold the ball against its seat, and i the i length and tension" of spring projecting arms 12, and by pressing on the wrench the follower 11 will be moved away from the ball 4 and the latter relieved from the pressure of spring 10 so that the spring 8 may unseat the ball and thus open the passage-way of the valve for the escape of fluid or gas therethrough. The valve casing is also formed with a port 24 for the passage of the fluid or gas whose flow is controlled by the ball or closure member of the valve. The ports 24 and 6' may serve as inlet and outlet ports of the valve.

The ball 4, or flow control member'of the valve, may be relieved from the tension of spring 10 so as to open the valve for the passage of fluid or gas, by either pulling on the rod 14, or pressing on the lateral arms 12 with the fingers of the hand or by means of the wrench 22, and when thus relieved the other spring 8 will aid in unseating the ball and prevent it sticking to its seat so that the prompt unseating of the closure member will be effected for the free flow of the liquid or gas.

In a valve formed asdescribed the closure member or ball is held to its seat against accidental displacement by spring pressure; when it is to be opened for the flow of the fluid or gas, the ball is relieved of the major spring pressure by manual manipulation and the minor spring pressure is exerted to promptly unseat the ball and permit the flow of the fluid or gas; and when the manual power on the major spring is released said spring at once exerts its tension to seat the ball and cut off the flow without depending on hand manipulation for cutting off the flow. The valve is adaptable for use in many places and under different conditions and is prompt and efficient in serving the purposes for which designed. Its form may be varied, and its details may be changed without departing from its essential features as endeavored to be expressed in the appended claims.

Having described my invention and set forth' its merits what I claim is:

1. The valve comprising a casing having inlet and outlet ports, a movable closure member within the casing, a spring exerting pressure on the closure member to unseat the same, a major spring exerting pressure on said member to normally hold it seated,and means for relieving the pressure of the major spring when the closure member is to be unseated.

2. The valve comprising a valve casing having inlet and outlet ports, a movable closure member within the casing, a spring for normally holding the closure member seated, a spring to exert pressure on the closure member to unseat the same, a follower between the closure member and first mentioned spring, and means for moving said follower to relieve pressure of the first mentioned spring on the closure member.

3. The valve comprising a valve casing having inlet and outlet ports, a movable closure member within the casing, a spring exerting pressure on the closure member to normally hold it seated, a follower between said spring and closure member, arms extending laterally from the follower through the sides of the casing, and shoulders formed on the casing and spaced from said extending arms and against which and said arms a tool may be inserted for moving the follower to relieve the pressure of the spring on the closure member.

4:. The valve comprising a casing having an inlet-and an outlet port a movable clo sure member within the casing, a spring exerting pressure on the closure member to unseat the same, a major spring exerting pressure on said member to normally hold it seated, a follower between said spring and closure member, arms extending laterally from the follower through the sides of the casing, and a stem extending from the follower and through the casing for moving the follower to relieve the pressure of the major spring on the closure member.

In testimony whereof I affix my signature in presence of two witnesses.

W. J. MACDONALD, R. E. Brown.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents Washington, I). G. 

